rusers.c revision 1.1
1 /*- 2 * Copyright (c) 1993, John Brezak 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #include <sys/types.h> 35 #include <sys/param.h> 36 #include <sys/socket.h> 37 #include <netdb.h> 38 #include <stdio.h> 39 #include <strings.h> 40 #include <rpc/rpc.h> 41 #include <arpa/inet.h> 42 #include <rpcsvc/rnusers.h> 43 44 #define MAX_INT 0x7fffffff 45 #define HOST_WIDTH 12 46 #define LINE_WIDTH 15 47 char *argv0; 48 49 int longopt; 50 int allopt; 51 52 struct host_list { 53 struct host_list *next; 54 struct in_addr addr; 55 } *hosts; 56 57 int search_host(struct in_addr addr) 58 { 59 struct host_list *hp; 60 61 if (!hosts) 62 return(0); 63 64 for (hp = hosts; hp != NULL; hp = hp->next) { 65 if (hp->addr.s_addr == addr.s_addr) 66 return(1); 67 } 68 return(0); 69 } 70 71 void remember_host(struct in_addr addr) 72 { 73 struct host_list *hp; 74 75 if (!(hp = (struct host_list *)malloc(sizeof(struct host_list)))) { 76 fprintf(stderr, "%s: no memory.\n", argv0); 77 exit(1); 78 } 79 hp->addr.s_addr = addr.s_addr; 80 hp->next = hosts; 81 hosts = hp; 82 } 83 84 rusers_reply(char *replyp, struct sockaddr_in *raddrp) 85 { 86 int x, idle; 87 char date[128], idle_time[128], remote[128]; 88 struct hostent *hp; 89 utmpidlearr *up = (utmpidlearr *)replyp; 90 char *host; 91 92 if (search_host(raddrp->sin_addr)) 93 return(0); 94 95 if (!allopt && !up->utmpidlearr_len) 96 return(0); 97 98 hp = gethostbyaddr((char *)&raddrp->sin_addr.s_addr, 99 sizeof(struct in_addr), AF_INET); 100 if (hp) 101 host = hp->h_name; 102 else 103 host = inet_ntoa(raddrp->sin_addr); 104 105 if (!longopt) 106 printf("%-*.*s ", HOST_WIDTH, HOST_WIDTH, host); 107 108 for (x = 0; x < up->utmpidlearr_len; x++) { 109 110 strcpy(date, &(ctime((time_t *)&(up->utmpidlearr_val[x].ui_utmp.ut_time))[4])); 111 112 idle = up->utmpidlearr_val[x].ui_idle; 113 sprintf(idle_time, " :%02d", idle); 114 if (idle == 0) 115 strcpy(idle_time, ""); 116 if (idle > 60) 117 sprintf(idle_time, "%d:%02d", idle/60, idle%60); 118 if (idle == MAX_INT) 119 strcpy(idle_time, "??"); 120 121 strcpy(remote, up->utmpidlearr_val[x].ui_utmp.ut_host); 122 if (strlen(remote) != 0) 123 sprintf(remote, "(%.16s)", up->utmpidlearr_val[x].ui_utmp.ut_host); 124 125 if (longopt) 126 printf("%-8.8s %*.*s:%-*.*s %-12.12s %6s %.18s\n", 127 up->utmpidlearr_val[x].ui_utmp.ut_name, 128 HOST_WIDTH, HOST_WIDTH, host, 129 LINE_WIDTH, LINE_WIDTH, up->utmpidlearr_val[x].ui_utmp.ut_line, 130 date, 131 idle_time, 132 remote 133 ); 134 else 135 printf("%s ", 136 up->utmpidlearr_val[x].ui_utmp.ut_name); 137 } 138 if (!longopt) 139 putchar('\n'); 140 141 remember_host(raddrp->sin_addr); 142 return(0); 143 } 144 145 onehost(char *host) 146 { 147 utmpidlearr up; 148 CLIENT *rusers_clnt; 149 struct sockaddr_in addr; 150 struct hostent *hp; 151 152 hp = gethostbyname(host); 153 if (hp == NULL) { 154 fprintf(stderr, "%s: unknown host \"%s\"\n", 155 argv0, host); 156 exit(1); 157 } 158 159 rusers_clnt = clnt_create(host, RUSERSPROG, RUSERSVERS_IDLE, "udp"); 160 if (rusers_clnt == NULL) { 161 clnt_pcreateerror(argv0); 162 exit(1); 163 } 164 165 bzero((char *)&up, sizeof(up)); 166 if (clnt_call(rusers_clnt, RUSERSPROC_NAMES, xdr_void, NULL, xdr_utmpidlearr, &up, NULL) != RPC_SUCCESS) { 167 clnt_perror(rusers_clnt, argv0); 168 exit(1); 169 } 170 addr.sin_addr.s_addr = *(int *)hp->h_addr; 171 rusers_reply((char *)&up, &addr); 172 } 173 174 allhosts() 175 { 176 utmpidlearr up; 177 enum clnt_stat clnt_stat; 178 179 bzero((char *)&up, sizeof(up)); 180 clnt_stat = clnt_broadcast(RUSERSPROG, RUSERSVERS_IDLE, RUSERSPROC_NAMES, 181 xdr_void, NULL, 182 xdr_utmpidlearr, &up, rusers_reply); 183 if (clnt_stat != RPC_SUCCESS && clnt_stat != RPC_TIMEDOUT) { 184 fprintf(stderr, "%s: %s\n", argv0, clnt_sperrno(clnt_stat)); 185 exit(1); 186 } 187 } 188 189 usage() 190 { 191 fprintf(stderr, "Usage: %s [-la] [hosts ...]\n", argv0); 192 exit(1); 193 } 194 195 main(int argc, char *argv[]) 196 { 197 int ch; 198 extern int optind; 199 200 if (!(argv0 = rindex(argv[0], '/'))) 201 argv0 = argv[0]; 202 else 203 argv0++; 204 205 206 while ((ch = getopt(argc, argv, "al")) != -1) 207 switch (ch) { 208 case 'a': 209 allopt++; 210 break; 211 case 'l': 212 longopt++; 213 break; 214 default: 215 usage(); 216 /*NOTREACHED*/ 217 } 218 219 if (argc == optind) 220 allhosts(); 221 else { 222 for (; optind < argc; optind++) 223 (void) onehost(argv[optind]); 224 } 225 exit(0); 226 } 227
Indexes created Sun Sep 28 16:09:52 GMT 2025